Keyphrases
Levonorgestrel
100%
Oviduct
98%
Ovulation
87%
Estradiol
74%
Progesterone
57%
Contraceptives
53%
Subdermal Implant
53%
Ovum
45%
RU486
44%
Nursing Women
44%
Contraceptive Use
36%
Contraception
35%
Emergency Contraception
34%
Norplant
34%
Bleeding
34%
Uterus
33%
Luteinizing Hormone
32%
Vaginal Ring
32%
Copper T
31%
Lactational Amenorrhea
31%
Menstrual Cycle
30%
Lactation
30%
Ovum Transport
29%
Clinical Trials
29%
Mifepristone
29%
Fallopian Tube
27%
Fertility Regulation
26%
Egg Transport
26%
Plasma Parameters
26%
Progestin
25%
Nestorone
25%
Estrogen
24%
Nursing
24%
Fertilization
22%
Endometrium
22%
Ovarian Function
21%
Placebo
21%
Lactating Women
19%
Infant Growth
19%
Luteal Phase
19%
Ethinylestradiol
19%
Spermatozoa
18%
Megestrol Acetate
18%
Embryo Transport
17%
Mechanism of Action
17%
Amenorrhea
16%
Intrauterine Device
16%
Genital Tract
16%
Follicle
16%
Contraceptive Methods
16%
Medicine and Dentistry
Levonorgestrel
59%
Implant
49%
Ovulation
47%
Mifepristone
36%
Progesterone
35%
Gestagen
30%
Subdermal Implant
28%
Ovum
27%
Bleeding
25%
Elcometrine
23%
Fertilization
21%
Emergency Contraception
21%
Clinical Trial
20%
Endometrium
20%
Contraceptive Implant
19%
Diethylstilbestrol
19%
Oocyte Transport
18%
Oviduct
18%
Oocyte
17%
Follicle
17%
Ovary Function
17%
Menstrual Cycle
17%
Intrauterine Device
17%
Vagina Ring
16%
Fallopian Tube
16%
Lactation
14%
Etonogestrel
14%
Contraceptive Agent
14%
Silastic
12%
Luteal Phase
11%
Low Drug Dose
11%
Luteinizing Hormone
10%
Megestrol Acetate
10%
Lactational Amenorrhea
9%
Ultrastructure
9%
Volunteer
9%
Ethinylestradiol
8%
Antigestagen
8%
Pregnancy Rate
8%
Corpus Luteum
8%
In Vitro
8%
Gonadotropin
8%
Breast Feeding
7%
Meloxicam
7%
Placebo
7%
Mucus
7%
Human Embryo
7%
Nuclear Membrane
7%
Follicular Phase
7%
Amenorrhea
7%